Notice is hereby given to all mariners and other parties concerned that:
1. Reference: Philippine Navy Radio Message Cite NOCB-0415-036.
2. The Philippine Navy vessels will conduct Test Firing of their naval guns on the date/time and place as indicated:
A. PS22, PG381 and PG390 at vicinity 07 nautical miles North off Pangutaran Island, Sulu on April 20, 2015 bounded by the following coordinates:
| Point A | Latitude 06 degs 19.57 mins North | Longitude 120 degs 24.56 mins East |
| Point B | Latitude 06 degs 29.50 mins North | Longitude 120 degs 24.56 mins East |
| Point C | Latitude 06 degs 29.50 mins North | Longitude 120 degs 14.34 mins East |
| Point D | Latitude 06 degs 19.57 mins North | Longitude 120 degs 14.34 mins East |
B. PG378 at vicinity 7.5 nautical miles Southwest off Kangtipayan Diki Island, Languyan, Tawi-Tawi on April 20, 2015 bounded by the following coordinates:
| Point A | Latitude 16 degs 15.00 mins North | Longitude 120 degs 13.00 mins East |
| Point B | Latitude 16 degs 10.00 mins North | Longitude 120 degs 13.00 mins East |
| Point C | Latitude 16 degs 15.00 mins North | Longitude 120 degs 18.00 mins East |
| Point D | Latitude 16 degs 10.00 mins North | Longitude 120 degs 18.00 mins East |
3. In this connection, all ships/watercrafts transiting the vicinity of the abovementioned areas are advised to take note of the information and take necessary precautionary measures at all times.
4. The cooperation of all concerned in effecting widest dissemination of this information is requested.